Re: [PATCH v2 2/7] signal: retarget_shared_pending: considershared/unblocked signals only

[Matt Fleming]

On Mon, 18 Apr 2011 15:45:01 +0200
Oleg Nesterov <oleg@xxxxxxxxxx> wrote:

> exit_signals() checks signal_pending() before retarget_shared_pending() but
> this is suboptimal. We can avoid the while_each_thread() loop in case when
> there are no shared signals visible to us.
> 
> Add the "shared_pending.signal & ~blocked" check. We don't use tsk->blocked
> directly but pass ~blocked as an argument, this is needed for the next patch.
> 
> Note: we can optimize this more. while_each_thread(t) can check t->blocked
> into account and stop after every pending signal has the new target, see the
> next patch.
> 
> Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>

Reviewed-by: Matt Fleming <matt.fleming@xxxxxxxxxxxxxxx>
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